Smoking pipe



Feb. l, 1938. J. P. TARBox SMOKING PIPE Filed March 1, 1934 2 Sheets-Sheet 1 3 l '-75 l 7 9 LZ"- 24 12H4 1% 6 i uw INVENTOR.

J. P. TARBox 2,106,774

SMOKING vPIPE Feb. 1', 1938.

2 Sheets-Sheet 2 Filed March l, 1954 B 37 l 1o 39 PIG. 8 46 INVENTOR.

Patented Feb. l, 1938 UNiTED STATES YPATENT OFFICE 18 Claims.

My invention relates to smoking pipes and method of cleansing the same. Such pipes are commonly intended for use in connection with loose tobacco. A special class of such pipes,

however, has to do with cigar and cigarette'holders or otherutilization of tobacco in wrappings or containers. My invention may be applied to any of these.

Its outstanding object is the eflicient collection of moisture and other content of the smoke which usually collects within the stems of pipes and the eiicient cleansing of the stem of such products.

A further object is the guarding of the stem with a cleansing device against the entry of solid mattei' from the pipe charge and the eiiicient ejection of the charge residue and ecient cleansing of the pipe bowl. The latter two results aid materially in guarding the draft members of the pipe against entry of solid matter from the charge.

A yet further object is to maintain open and free from deposit which may obstruct the draft, particularly the opening between the draft portion of the pipe and the bowl but also all other parts of the draft members.

These objects I attain outstandingly by including in the draft connection between the mouthpiece of the pipe and the bowl a displacement type of pump through the chamber of which the draft. connection is effected and which displacement pump has a valved connection to atmosphere for the forcible ejection of the contents of the pump chamber to atmosphere. A second valve connection is provided between the chamber and the pipe bowl. In the bowl of the pipe above the pump there is provided in all cases a disc type guard. This guard is axially reciprocable into and out of its guarding position by various means.

'I'he utilization of a pressure force pump for the ejection of the liquid condensate and ash or other solid content of the smoke which is collected by condensation usually in the stem, is the means best known to me at the present time for carrying out the method of my invention which is simply this. A uid pressure is developed within the liquid content of the pipe and this iiuid pressure is utilized to eject the contents themselves.

The drawings represent several of the best embodiments of my invention. Referring to them- Figure 1 is a longitudinal section in the plane including the axes of the bowl and stem of the pipe of one form of the invention.

Figure 2 is a similar section of another form of the invention.

Figure 3 is a section on line 3-3 of Fig. 2 5 looking in the direction of the arrows.

Figure 4 is a section of yet another iorm also in the plane including both the bowl and the stem axes.

Figure 5 is a top plan view of the form of Fig. 4. 10

Figure 6 is an axial section of still a fourth form.

Figure 7 is a general side elevation showing in dotted lines the application of the invention to pipes having curved mouthpieces and bowls at l5 acute angles to the stems, such as commonly found in curved or depending stem pipes.

Figure 8 is an axial section of a pipe or cigarette or cigar holder embodying the invention of Fig. 6.

Figure 9 is a portion of the section of Fig. 1 showing the parts in an ejecting position.

Figure 10 is a similar view of a portion of Fig. 2. Figure l1 is a front end view of the form of the invention shown in Fig. 1 with the parts 2l broken away taken on line Il-II of Fig. 1.

Figure l2 is a section on line I2-I2 of the form of invention shown in Fig. 4 showing the section of the front end of the plunger.

Figure 13 is a transverse section through the 3` connection between the stem and mouthpiece of the form of Fig. 1.

Similar reference numerals are used throughout to designate similar parts. The bowl vof the pipe is designated I0, the mouthpiece in general Il, the stem in general I2. Intermediate the bowl I0 and the mouthpiece II there is used in each of the several forms of the invention a displacement pump designated generally I3 through the chamber of which I4 the draft con- 40 nection from the bowl, IU to the mouthpiece I I is effected. 'I'his pump may be located anywhere whatsoever and in any attitude between the bowl IIJ and the mouthpiece Il and it may be of any form of displacement pump whatsoever. In the several forms disclosed, however, I have for the sake of convenience located it within and considered it a part of the stem I2.

The pump is illustrated as a reciprocating type of plunger or piston pump utilizing a piston I5 50 reciprocated longitudinally of the chamber Il and the chamber III is of elongated cylindrical form. Sometimes this chamber is annular in form defined wholly by the circular cross section of the stem as in Fig. 6 or by the cross sec- 55 tion of the inserted tube 28, as in Fig. 1, and sometimes it is approximately rectangular and formed partly by the walls of the stem or inserted tube and partly by the configuration of the plunger-as in Figs. 2, 3 and 4. The piston I5 fits snugly within the chamber so as to move easily therein under all conditions of operation or use of the pipe but yet be substantially or wholly free from leakage as may be desired. The piston I5 is reciprocable within the chamber by means of piston rod I6. In some cases, as in the instance of Figs. 1, 6 and 48, the piston rod I 8 is of small cross section located centrally of the circular chamber in the stem, as is more common with piston rods, and in other cases, as in Figs. 2, 3 and 4, this piston rod, designated in these views I6', is enlarged and except for its cut-away portion which opens up the space of the chamber I4, is substantially of the diameter of the piston I5. the bowl end with the port I'I, as in Figs. 1, 2 and 4, and with a port 44 as in Figs. 6 and 8, through which it connects with the bowl and is provided also either at the bowl end, as in Figs. 1, 2 and 4, with the port I8, or at the mouthpiece end, as in Figs. 6 and 8, with the port 45, which communicates with the atmosphere, one end at least of the chamber is provided with an abutment I9 sometimes (see Figs. l, 6, 8 and 9) constituting the solid end closure or head of the chamber and sometimes, (see Figs. 2, 3, 4 and 10) in the form of a deectable head or end closure I9 serving as a scraper with which abutment the piston plunger I5 may coact to forcibly eject the contents of the chamber I4 through the ports I8 or 45 to atmosphere.

In the forms of the invention shown in Figs. 1, 2, 3, 9 and 10 the cylinder of the pump which constitutes the walls of the chamber I4 is in the form of a tube 2li with a diameter somewhat smaller than the over-all diameter of the stem I2 and which is rotatably and slidably journaled in a stem aperture 2| extending axially through forms of Figs. 4, 6 and 8 the cylinder constituting the walls of the chamber I4 constitutes the stem per se in its entirety.

Referring now particularly to each of the several forms of the invention in succession, in the form of Fig. 1, the plunger I5 is of the piston type and normally lies at the mouthpiece end of a pipe. Here the piston I5 is bridged normally by a draft connection 22. between the chamber I4 and the stem II. This draft connection is in the form of a slot cut in the end oi the tube 28 at its top. It establishes draft connection around the piston I5 between the chamber I4 and the draft opening 23 of the mouthpiece. 'Ihe piston rod I6 is extended out through the head I9 closing the opposite end of the chamber I4 and provided with a small suspended ring 24 for manual reciprocation of the piston I5. The mouthpiece II is threaded on to the adjoining end of the tube 20 to such an extent that it entirely closes the slot 22. A small screw or rivet 25 insures proper angular relation of the mouthpiece to the tube 28. The abutment of shoulder 26 against the end 21 of the tube may serve a similar and perhaps cooperative purpose. The outer walls of the stem may be constituted of tubular filler members as 21 between the root of the stem 28 integral with the bowl I0 and the The chamber is provided at dark brown in color.

mouthpiece, or it may be a part of the integral connection 28 or the tube 28 'may be without coveringin this region if desired. 'I

In the bowl of the pipe the guard 29 is suspendedin a. position closely adjoining the port I1 by means of an annular series of small rods or wires 30 welded to it at their lower ends and welded to an operating ring 3l at their upper ends. The rods 30 bear upon the walls of the bowl with suflicient friction to keep the guard 28 in place when moved axially into position by grasping the ring 3|.

The section of Figure 1 shows the parts in the position in which the pipe is smoked. Port I1 to the bowl III is open. Port I8 to atmosphere is closed. Port 22 at the opposite end of the chamber I4 is open. 'I'he smoke traverses the length of the displacement chamber I4. The moisture and other products usually condensed or otherwise deposited in the stem are collected upon the metallic walls of the tube 2li between the port I1 and the piston I5. So deposited they appear usually as a heavy viscous liquid very It is convenient to call the liquid a liquid condensate. The other products are usually ash or perhaps small particles of unburned tobacco. At any time it is desired to cleanse the stem of its collected contents, the smoker gives the mouthpiece and connected tube 20 a turn of 180 which results in closing the port I1 and opening the port I8'as shown in Fig. 9. Thereupon he quickly draws the piston I5 the length of the chamber and into contact with the head I9 of chamber I4 whereupon the liquid condensate is placed under pressure and forcibly ejected from the port I8. This relation of the parts is shown also in Fig. 9. The initial movement of the piston I5 from the position of Fig. 1 closes the port 22 communicating with the mouthpiece II so that the only possible egress for the contents of the chamber I4 is axially of its length and forcibly through the port I8. But one movement of the plunger completely and thoroughly cleanses the entire chamber. In all the formsl of the invention, the close approach and ultimate contact of the` piston I5 with'either the fixed head I9 or the yieldable combined head and scraper I9 develops within the fluid comprised by the liquid condensate in and of itself a strong fluid pressure, and it is through this pressure and, in the form shown in Figs. 2 and 4, additionally through the sudden outward thrust of the movable abutment I9' by the incline on the piston, that the forcible ejection is achieved. turned to the normal position of Fig. l and the mouthpiece II and attached tube 20 turned back through closing port I8 and again opening the port I1 to the bowl. The cleaned pipe is again ready for smoking.

During this smoking the guard disc 29 effectually guards port I'I against the entrance of solid matter. Such small grain solid matter as may once in a great while pass the disc screen 29 is eifectually cut off and cut through by the edges of the tube wall 28 at the port I1 when the tube 28 is rotated to open port I8. The turning of the edges at port I1 to the opening of the port I8 presents any such small solid matter at a point where the forcible ejection of the contents of the chamber I4 when plunger I5 brings up against the head I9 causes aso the forcible ejection of such occasional solid matter.

However, during the great part of the time the disc 29 precludes the solid matter from reaching Immediately the plunger may be rethe port. This is aided very greatly by the functioning of the disc 29 when it is moved axially of the bowl in ejeoting residues of charges thoroughly and in scraping by the edges or the disc 29 residue from the bowl I0. This keeps the bowl so thoroughly cleansed of minor particles of tobaccol and ash and particularly burned tobacco that such material does not accumulate at the bottom and therefore is not present to pass by the disc 29. Yet further, because the disc is used the residue of charges is ejected as a body and there is no call for the use of knife blades and the like which not only sepa rate the residue into small portions which may fall within the port I1 but also when used may actually project residue into the port I'I. Further yet. in the packing of the pipe, particles of the new charge might enter the port I1 were it not for the guard 29.

In the form of Figs. 3 and 4 the guard is essen tially the same as in Figs. 1 and 2. It is to be noted in Fig. 5 where the plan view is shown the draft apertures of the guard 29 are in the form of notches 32 in its edge and not in the form of perforations in its body. This results in confining the draft from the bowl to the edges of the disc guard 29. This gives a better distribution of the draft in the bowl and affords a better burning adjoining the walls of the bowl, especially as the bottom parts of the charge are being burned. Yet further, the notches in the edge are easily cleaned whereas perforations in the body are dii-licultly cleaned. More to the point, however, the

` elimination of perforations from the mid-portions of the guard prevents solid matter from dropping into and clogging port II of the chamber I4 of the displacement pump. Any other means whatsoever for operating the guard 29 may be used.

The displacement pump of Figs. 2, 3 and 4 is of a different form. The piston I5 and the plunger IB are of a diameter completely lling and fitting the tube 20, see Figs. 2 and 3, or the bore of the stem per se, see Fig. 4. The chamber I4 is formed by a longitudinal milling out of the main body of the plunger IB' between its ends and all the way from the port 22 of Fig. 2 formed in the tube 20, or the port 22 oi Fig. 4 formed in the stem per se to the port II. The head I9' is in the form of a spring the one end of which is riveted or otherwise iixed to the tube 20 (Fig. 2) or to the bottom of the bowl (Fig. 4) and the other end of which projects yieldably into and closely fits the rectangular cross section of the chamber I4 as shown in I Figs. 2 and 3.

In the form of Figs. 2 and 3. therefore, when the mouthpiece I I and connected tube 2|) are turned to close port I'I and open port I9. and thereafter the plunger I6' is pulled out as shown in Fig. 10, the head of the chamber constituted by the spring I9' not only serves as a compression head but scrapes the entire chamber I4 clear of its contents and iinally rides up on to the opposite end of the rod, which constitutes the piston I5, forcibly ejecting the contents through the port I8.

The operation otherwise is essentially the same as that in Fig. 1. In this form o the device like that of Figs. l and 4 the rotation through 180 to close port I'I and open port I8 and vice versa is regulated by a stop 33 which is fixed to the wall of the bowl I0 and projects into a 180 recess in the end of the tube 20 or the end of the plunger I6' as the case may be. See Figs. 11 and 12.

In the form of Fig. 4 the stop projection 33' is on the end of the plunger Ii' and extends into a 180 recess in the bottom of the bowl as is shown in Fig. 12 whereas in the form of Figs. 1 and 2 the arrangement is the reverse with the stop 33 on the bowl and the 180 recess in the tuoe 20 as is shown in Fig. 11. In the form of Fig. 4 the outer wall of the stem I2 corresponds to the tube 2D of Figs. 1 and 2 and may be an integral continuation ci the bowl Ill as stated. Therefore, the valved action brought about by a relative movement oi the parts of the stem I2 consists in the rotation of the plunger IG itself instead of a rota'ion of the tube 2U Within the stem at large. Otherwise the operation of the form of Fig. 4 is precisely the same as that of the form of Fig. 10.

The bowl of this form of Fig. 4 is also dierent from the bowl of the form of Figs. l and 2. It is a metallic bowl instead of a wooden bowl, preferably of cast duralumin. It consists of a relatively thin main shell 34 provided with radial axially extended external ribs 35 for cooling purposes. Outside of these ribs there is superimposed a cylindrical shell 36 of insuiating material. Guard and ejecting disc 29 is connected by the wires 39 with and operated by bodily axial withdrawal and replacement of this shell 36 from the ribs of the bowl. The shell thus jointly serves as a manipulator of the guard 29 and an insulator of the metal of the pipe. The tubular stem I 2 may or may not be formed integrally as shown with the bowl. The

port 22' then consists of a groove formed interi nally of the tubular stem I2 and the mouthpiece I I is threaded internally of the outer end of the stem instead of externally as in the other forms.

The form of Fig. 6 consists of quite a different arrangement of parts. In this the axis of the bowl and the axis of the stem I2 instead of being at an angle to each other are in longitudinal continuation. The 'bowl and stem are connected together for relative axial movement through a complemental taper 3l between the bottom of the bowl and the adjoining end of the stem so that the bowl may be moved axially toward the mouthpiece from the full line position shown to the dotted line position shown. When seated on the taper 31 the bowl IU makes a draft-tight joint with the same. When the-bowl and stem are moved relatively to place the bowl in the dotted line position Vshown in Fig. 6, the stem is constituted an ejector for the residue contents of the bowl. To this end the disc guard 29 is mounted directly on the end of the stem and secured thereto by small screws 38 or equivalent means. In lgeneral plan form the disc guard 29 is of perimetric outline shown in Fig. 5 and has a similar relation to the interior walls of the bowl I0. The bowl II) is provided with an upturned lip 39 extending the lower edge of the mouth 4D beyond ythe upper edge whereby ash may not be readily through the head I9 which closes the mouthpiece end of the stem and is connected with the mouthpiece by a screw 43 or equivalent device such as a pin or a rivet in such manner that when the mouthpiece is grasped and pulled oi of the stem I2, the plunger is moved the length of the loA chamber I4 up against the head I9. Through radialgrooves-or apertures 44 at the bowl end of the stem free draft connection is normally maintained with the bowl I 0. This connection is valve closed by the plunger I5 in its initial movement axially outwardly into the chamber I4. Through the port 45 in the walls of the chamber I4 immediately adjoining the head I9 the valve connection to atmosphere is established at the mouthpiece end. 'I'his valve connection is normally closed by the skirted extension 46 from the mouthpiece` II. This connection may be cylindrical or taper seated as indicated at 4'I and constitutes the seating or socketing of the mouthpiece II upon the stem I2. It extends sufficiently toward the bowl from the port 45 to effectually seal the port 45 from atmosphere when the mouthpiece I I is seated upon the stem. A slotted port 22' similar to that used in the forms o f Figs. l, 2 and 4, however, when the mouthpiece II is seated, affords draft connection through the port 45 to the mouthpiece as shown. Draft is normally therefore maintained from the bowl to the mouthpiece but when the mouthpiece is withdrawn to pull the plunger I5 into forcible contact with the head I9, the port 45 is opened to atmosphere and the contents of chamber I4 forcibly ejected therefrom.

This form of the invention has particular adaptation to pipes having curved mouthpieces as shown in Fig. '7.

It also has particular adaptation to pipes of the nature of cigarette, cigar or other package type holders as shown in Fig. 8 where corresponding parts are provided with reference numerals -corresponding to the numerals in Fig. 6. This form of Fig. 8 differs particularly from the preceding forms in that the bowl I0 is so small that it accommodates but one end of the packaged charge, e. g., a cigarette, cigar or tobacco in wrappers or containers. Otherwise the general arrangement of the parts is the same and their functionings are the same. The ejector ejects the residue of the charge when the bcwl and stem are relatively moved to the dotted line position. The pump I3 ejects the contents of of the stem when the mouthpiece and the body of the stem are relatively moved in the same manner as in the form of Fig. 6. In this embodiment I have substituted for the taper seating 31 of the forms of Figs. 6 and 'l a coarse screw thread connection according to which by but a fraction of a turn or a turn or two the bowl I0 may be unseated and moved axially toward the mouthpiece II, as shown in dotted lines, for the purpose of ejecting charge residue.

It is to be noted in connection with all of these forms of the invention disclosed in Figs. 6, 'l and 8, particularly in connection with that shown in Fig. 7, that due to the fact that the draft is always upwardly o-f the bowl and the stem, the stem has a certain chimney effect and that such a pipe will remain lit therefore for longer periods of time and burn better while being smoked.

My invention is capable of many modifications as herein appears. Those disclosed and all others which come within the purview of the invention per se (as distinguished from the structures specifically subject to the circumstantial terminology I have chosen to describe my invention) are intended to be covered by the annexed claims.

What I claim as new and useful and desire to protect by Letters Patent is:-

1. A pipe comprising a bowl, a stem having a head at one end and a mouthpiece, a piston in -tion of the piston may eject directly from the stem to the atmosphere the contents of the stem.

2.1A pipe comprising a bowl. a stem having a fixed head at one end, a piston in the stem adapted to be reciprocated therein to and from the head, and means establishing a valved connection between the headed end of the stem and the atmosphere independent of the bowl whereby reciprocation of the piston when the valved connection is an open one forcibly ejects the contents of the stem to atmosphere through co-action between the piston and the head. l

3. A pipe comprising a bowl, a stem having a draft chamber provided with a fixed abutment at one end, a piston in the stem adapted to be reciprocated therein toward and from said abutment, and relatively movable parts including said stem controlling a valve port from the stem to the atmosphere substantially at the abutment and independent of the bowl, whereby reciprocation of the piston may forcibly eject the contents of the stem through the port to atmosphere through co-action with said abutment.

4. A pipe having a bowl and a draft mouthpiece and a displacement force pump between the bowl and the mouth-piece through the chamber of which pump draft connection is normally effected between the bowl and the mouthpiece,

ywhich pump has a valved ejection port to atmosf phere and a fixed abutment adjacent said port and means to operate the pump to forcibly eject the contents of said chamber through said port by coaction with said abutment.

5. A pipe comprising a bowl and a mouth-piece and a force pump intermediate the bowl and the mouth-piece through the chamber of which, draft connection is effected between the bowl and the mouth-piece, a fixed head at one end of said pump chamber, and a valved port to atmosphere from the pump chamber adjacent said head through which the contents of the pump chamber may be forcibly ejected through the operation of the pump, which port is on the upper side of said chamber..

5. A pipe comprising a bowl and a mouthpiece and a pressure force pump intermediate the bowl and the mouthpiece through the chamber of which, draft connection is effected between the bowl and the mouthpiece and which receives the liquid condensate, and a normally closed valved port to atmosphere from the pump chamber through which the liquid condensate of the pump chamber may be forcibly ejected under pressure through the operation of the pump, and a second valved port connecting the chamber with the bowl. ='*l'l 7. A pipe comprising a bowl, a mouthpiece, a displacement pressure force pump through the chamber of which, draft connection is effected between the mouthpiece and the bowl, and a valved port at one end of said pump chamber through which the liquid condensate of the chamber may be forcibly ejected under pressure to atmosphere through the operation of the pump, and a valved connection at the other end of the chamber to the bowl of the pipe.

8. A pipe comprising a bowl, a mouthpiece, a displacement pressure force pump having a chamber by which draft connection is effected a port connecting the pump chamber with the between the bowl and the mouthpiece, a port connecting the pump chamber with the bowl and atmosphere, a fixed head adjacent said port to atmosphere, together with means for opening and closing the ports, and means for operating the pump in cooperation with said head to eject under pressure through said port the liquid condensate of said chamber.

9. A pipe 'comprising a bowl, a mouth-piece, a displacement force pump having a chamber by which draft connection is effected between the bowl andthe mouth-piece, a port connecting the pump chamber with the bowl and a port connecting the pump chamber with the atmosphere, a xed abutment at the end of said pump chamber adjacent the port to atmosphere and means for closing the port to the bowl when the port to atmosphere is opened.

10. A pipe comprising a bowl, a mouth-piece, a displacement force pump having a chamber by which its draft connection is effected between the bowl and the mouth-piece, a port connecting the pump chamber with the bowl and a port connectingthe pump chamber with the atmosphere, a 'y fixed abutment at the end of said chamber adjacent the port to atmosphere and sliding valve means to close and open the ports.

l1. A pipe comprising a bowl, a stem, a mouthpiece, a displacement pump having a chamber by which its draft connection is effected between the bowl and the mouth-piece, a port connecting the pump chamber with the bowl and a port connecting the pump chamber with the atmosphere independent of the mouthpiece, and sliding valve means comprising relatively movable parts cacting with the pipe stem to open and close the ports.

12. A pipe comprising a bowl, a mouthpiece and a force type displacement pump having a displacement chamber through Which draft connection between the bowl and the mouthpiece is effected, a fixed head at the mouthpiece end of the pump chamber, a valved port between the bowl end of the pump chamber and the bowl, and a valved port between the mouthpiece end of the pump chamber and the atmosphere arranged on the side of said head toward the bowl.

13. A pipe comprising bowl, mouth-piece and a reciprocating force type displacement pump having a displacement chamber through which draft connection is effected between the bowl and the mouthpiece, said chamber having a flxedly headed end and the piston rod of the pump extending through said headed end for operation of the pump from the exterior of the chamber, and a valved connection to atmosphere adjacent said head of the chamber whereby upon operation of the piston to said head the contents of the chamber are forcibly ejected to atmosphere between the piston and the head.

14. A pipe comprising a bowl, mouth-piece and a reciprocating type displacement pump having a displacement chamber through which draft connection is effected between the bowl and the mouthpiece, said chamber having a headed end and a piston rod of the pump extending through said headed end for operation of the pump from the exterior of the chamber, and a valved connection to atmosphere adjacent said head of the chamber whereby upon operation of the piston to that head the contents of the chamber are forcibly ejected to atmosphere between the piston and the head, and said pump being embodied in the pipe stem in axial alignment with the mouthpiece.

15. In a pipe comprising a bowl, a mouth-piece, a displacement pump having a cylindrical displacement chamber through which draft connection is effected between the bowl and the mouthpiece and comprising a metallic tube interconnecting the bowl and the mouth-piece and rotatable relatively to the bowl, and ports in the pipe bowl between the bowl space and the chamber on the one hand and the chamber and the atmosphere on the other under valved control through the rotation of said tube.

16. A pipe comprising a bowl, a mouth-piece and a piston pressure pump interconnecting the bowl and the mouth-piece having a chamber through which draft connection is effected from the bowl to the mouth-piece and comprising a cylinder in the form of a tube interconnecting the bowl and the mouthpiece, and a valved connection between such chamber and the atmosphere controlled by relative movement between the tube on the one hand and the bowl on the other, said piston pump including means adapted to create a pressure to force the chamber contents through said connection.

1'7. A pipe comprising a bowl and a mouthpiece, a displacement type pressure force pump having a displacement chamber through which draft connection is effected from the bowl to the mouthpiece and provided with relatively movable parts through which the liquid condensate within the chamber is put under pressure, together with a port to atmosphere communicating with that portion of the chamber in which the liquid pressure is developed wherethrough the liquid condensate may be ejected under pressure to atmosphere.

18. A pipe comprising a bowl and a mouthpiece, a displacement type pressure force pump having a displacement chamber through which draft connection is effected from the bowl to the mouthpiece and provided with relatively movable parts through which the liquid condensate within the chamber is put under pressure, to-

gether with a port to atmosphere communicating with that portion of the chamber in which the liquid pressure is developed wherethrough the liquid condensate may be ejected under pressure to atmosphere, one of said relatively movable parts comprising a piston, and the other a coacting h'ead at the bowl end of the pipe.

JOHN P. TARBQX. 

